Effect of umbilical cord drainage after spontaneous delivery in the third stage of labor.

We assume that during umbilical cord drainage, the collapse of thin-walled uteroplacental vessels occurs earlier causing bleeding from these vessels between the placenta and the uterine wall, and therefore, earlier separation of the placenta occurs. Of course, the drainage of the umbilical cord is only one step in the algorithm of active management at the third stage of labor according to FIGO.